JP4426055B2 - Packaging bag for sandwich - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sandwich packaging bag for packaging triangular sandwiches, and more particularly to a sandwich packaging bag that is easy to open and can maintain the form of the bag after opening.
[0002]
[Prior art]
A conventional sandwich packaging bag will be described with reference to FIG.
This sandwich packaging bag 1 includes a substantially trapezoidal front film 2 and a back film 3 which are overlapped to heat-seal both side edges 4 and 4 of both films 2 and 3, and upper edge parts 8 and near the upper edge part 5 They are heat-sealed, and are provided with a knob 9 between the upper edge 8 and the vicinity 5 of the upper edge.
The knob 9 is used as a space for providing an opening knob (not shown) that is a trigger for opening, as a space for decoration and content display printing, or as a knob that is manually picked when handling a sandwich. Therefore, it is provided as appropriate.
As shown in FIG. 6, the opening 7 of the sandwich packaging bag 1 is opened, and a triangular sandwich 20 is inserted so that the front surface (inclined surface) 20a is inscribed in the front film 2, and two one-dot chain lines 13a are inserted. 13b, is folded along the sandwich 20 and expanded three-dimensionally into a pyramidal cylinder, and the lower part of the sandwich packaging bag 1 extending in a pyramidal cylinder outwardly from the bottom surface (surface to be seated at the time of display) 20c of the sandwich 20 Regarding the four side surfaces, first, the lower one side surface of the packaging bag 1 corresponding to the back surface 20b of the sandwich 20 is folded so as to overlap the bottom surface 20c of the sandwich 20, and then the packaging bag 1 corresponding to the triangular surfaces on both sides of the sandwich 20 The lower two opposite side surfaces are folded in order so as to overlap the bottom surface 20c of the sandwich 20, and then the packaging bag 1 corresponding to the front surface 20a of the sandwich 20 The lower side surface is folded so as to overlap the bottom surface 20c of the sandwich 20, and finally the lower four side surfaces of the packaging bag 1 folded on the bottom surface 20c of the sandwich 20 are sealed by sticking a sealing adhesive tape 30 or the like. Become.
[0003]
[Problems to be solved by the invention]
Many sandwich packages of the above-described form have been proposed so far for the purpose of easy opening. Among them, the type that is most popular at present (almost 100% in convenience stores) uses the front film 2 in contact with the front surface 20a of the sandwich 20 or the back film 3 in contact with the back surface 20b of the sandwich 20 as the opening means. The cut tape that has been welded and bonded to the inner surface is pulled vertically to divide the film, and the film is further torn from the dividing line to both side surfaces of the sandwich to expand and take out the sandwich.
Typical prior art documents of this type include (a) No. 2-32587 and (b) No. 6-61757.
The feature of the opening means in the device disclosed in this document is that a knob (not shown) that triggers opening of the knob 9 of the sandwich packaging bag 1 described with reference to FIG. 7 and an opening connected thereto. A cut tape (not shown) is provided. The method for opening the sandwich package will be described with reference to FIG.
When opening, first, as shown in FIG. 7A, the knob 31 is pulled downward, and the back film 3 portion in contact with the back surface 20b of the sandwich 20 is vertically divided by the cut tape 32. The progress of the cut tape 32 to be cut stops when it hits the sealing adhesive tape 30 attached to the sandwich back surface 20c. Next, the film is spread from the dividing line in the direction of both sides of the sandwich 20 (in the direction of the arrow shown in FIG. 7 (a)) and spread as shown in FIG. 7 (b), and still further as shown in FIG. 7 (c). When the bag is cleaved until the bottom of the sandwich 20 covered with the film is completely exposed, the bag is completely torn into a broken state that does not retain the shape of the bag so that the sandwich 20 can be removed. .
[0004]
Since opening is performed as described above, there are various problems as follows.
(B) After the film has been cut vertically, it is necessary to cleave the film until the bottom of the sandwich is completely exposed, but the sandwich is soft and easily deformed or deformed, and it cannot be subjected to excessive external pressure. It is difficult to open the film while holding it. It was difficult to operate stably unless it was placed on a table or the like, and it was very difficult to open it while holding it by hand. A small child even dropped the sandwich down.
(B) Since the sandwich packaging bag will be cleaved without staying in the shape of the bag, when eating one of the stored sandwiches, the remaining sandwiches other than those eaten are left exposed Become. If the packaging bags remain intact, they can't do this, although they can be taken out of the packaging bags one at a time and can be stored temporarily in a sanitary manner. In addition, when eating in a car, if the leftover sandwich is left uncovered, it will be a problem for temporary placement.
(C) As disclosed in Japanese Utility Model Publication No. 2-332587 and (b) Japanese Utility Model Publication No. 6-61757, when the film is cut vertically and opened, the dividing line is thinned and the dividing force is reduced. If you lose, you may run out. In order to prevent this, the cut line is reinforced by using a cut tape, or a uniaxially stretched film is used so that the cut line is aligned with the extending direction so that the cut line can be reliably cut. For this reason, in manufacturing the packaging bag for sandwiches, extra costs are incurred due to the use of a cut tape or a uniaxially stretched film having a tear direction.
[0005]
There are many other prior art documents as proposals for the opening method, such as (c) Japanese Utility Model Publication No. 5-61043, (d) Registered Utility Model No. 3067314, (e) Japanese Utility Model Application Publication No. 6-10171, etc. There are many others.
Both are common in that the film that contacts the front or back of the sandwich at the time of opening is cut in the longitudinal direction, the sandwich is taken out, and the above problems (I), (B), (C) is also manifested in the same way.
[0006]
Although it is the same in using the sandwich packaging bag described in the section of “Prior Art”, (f) Actual Kaihei 6 as a prior art document proposing another opening means different from the one described above. -35144.
As shown in FIGS. 10 and 11 of Japanese Utility Model Publication No. 6-35144, the opening means is characterized in that the end of the adhesive tape for sealing that seals the bottom of the sandwich is made non-adhesive. The adhesive tape is peeled off from the non-adhesive part and opened.
According to this opening means, since the sandwich packaging bag is not destroyed at the time of opening, the above-mentioned problems (a), (b), (c) are solved at once, and it is very excellent. Opening means. In addition, as described in the same document, it has an excellent feature that can be easily opened instantly with one touch.
However, this form has the following major problems in practical use and has not been put into practical use at all.
(D) Since the adhesive tape for sealing is peeled off when opened, no scratches are left anywhere on the sandwich packaging bag. If it is sealed again with the peeled adhesive tape for sealing, there will be no trace of it once opened. The so-called opening virgin property cannot be guaranteed and it cannot be adopted in the convenience store industry where safety management is strict.
(E) Unlike the roll-wrapped general-purpose pressure-sensitive adhesive tape, the pressure-sensitive adhesive tape whose end is made non-adhesive cannot be continuously manufactured, and the cost is greatly increased. In addition, when the sandwich is sealed, the handling becomes complicated and the working efficiency is lowered as compared with the case where the roll-wrapped general-purpose adhesive tape is cut to an appropriate length.
[0007]
In view of the above problems (b), (b), (c), (d), and (e), the present invention assures the virginity of packaging that does not completely return to the original packaging form once opened. Can be opened, and anyone can easily open it without using a cut tape, a uniaxially stretched film with tear directionality, or a special sealing adhesive tape (adhesive tape with non-adhesive end) It is an object to provide a packaging bag for sandwiches that can be opened in a single-touch instantly in a bag-like form, can continue to store uneaten sandwiches and can be kept clean, and can be manufactured at low cost. It is said.
[0008]
[Means for solving problems]
The above problem is that the top and bottom films of the trapezoidal trapezoid overlap and the upper edges and both edges of both films are connected to each other. In the sandwich packaging bag that folds from the last, folds the film at the end and folds opposite the film, and sticks and seals the adhesive tape across the film.
At least one of the front film and the back film is connected to the lower end of the upper film by overlapping the upper end of the middle film on the inside, and further connected to the lower end of the middle film by overlapping the upper end of the lower film on the outside, and , Comprising an opening tab formed by providing a required notch at the upper end of the lower film, and configured to be able to tear the lower film toward the lower end of the bag by picking the opening tab. It is achieved by a sandwich packaging bag characterized by the following.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A sandwich packaging bag according to an embodiment of the present invention will be described with reference to FIG.
The sandwich packaging bag 1 of FIG. 1 is overlapped on a front film 2 and a back film 3 made of a substantially trapezoidal polypropylene film or the like, heat-sealing both side edges 4, 4 of both films 2, 3, and both films 2 , 3 are heat-sealed between the upper edge portions 8 and the vicinity of the upper edge portions 5, and a knob 9 is provided between the upper edge portion 8 and the upper edge portion vicinity 5.
The back film 3 is formed by adding an upper film 3a, a middle film 3b, and a lower film 3c. Specifically, the middle film 3b occupying about 1/3 to about 1/2 of the height of the bag at the lower end of the upper film 3a occupying about 1/4 to about 1/3 of the height of the bag. The upper end of the lower film 3c, which occupies about 1/4 to about 1/3 of the height of the bag, is overlapped and connected to the lower end of the middle film 3b.
At the upper end of the lower film 3c, the required cuts 10 and 10 are provided and an opening knob 11 is provided.
When the opening tab 11 is picked and pulled downward, the heat seal with the middle film 3b is peeled off and the lower film 3c can be torn toward the lower end.
Therefore, since the lower film 3c is torn, the virginity of the packaging is ensured.
[0010]
A sandwich packaging bag according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 2, the sandwich packaging bag 1 of FIG. 1 can be mass-produced by stacking continuous films, heat-sealing them, and alternately cutting them into trapezoids and inverted trapezoids.
More specifically, a narrow continuous film is fed out from two first raw rolls R1 and R2 attached with a required interval on one axis, and one film is set as the upper film 3a, and the other film is set as the other film. As the lower film 3c, an opening tab 11 formed by making two cuts 10 and 10 respectively on the lower edge of the upper film 3a and the upper edge of the lower film 3c by a not-shown cutting device is disposed. In addition, the upper opening tab 11 and the lower opening tab 11 are provided so as to be in a staggered arrangement with a required distance therebetween, and then a narrow continuous film is fed out from the third raw roll R3. And the lower edge of the continuous upper film 3a provided with the opening tabs 11 on both sides in the width direction of the upper surface of the continuous middle film 3b. The upper edge of the film 3c is overlapped, and the wide back film 3 is formed by adding the upper film 3a, the middle film 3b, and the lower film 3c by the heat seal rolls r1 and r1, and then the fourth raw fabric. A wide continuous film is drawn out from the roll R4, and the film is superposed on the lower side of the continuous wide back film 3 as a front film 2 and passed between a pair of seal cut rolls (not shown) to form a trapezoid and an inverted trapezoid. When sealing and cutting so as to alternate, both side edges 4 and 4 of both films 2 and 3 are heat-sealed, and the upper edge parts 8 of both films 2 and 3 and the vicinity of upper edge parts 5 are heated. It is possible to mass-produce sandwich packaging bags 1, 1,... Having a knob 9 between the upper edge 8 and the vicinity 5 of the upper edge. In addition, about the heat seal which joins the intermediate | middle stage film 3b and the lower stage film 3c, the seal width of the location corresponding to the opening tab 11 is made small, and the edge part of an unwelded part is used as this opening tab 11. preferable.
The sandwich packaging bag manufactured by this manufacturing method is innovative when the upper film 3a and the lower film 3c are made of a film containing light blue, for example, and the middle film 3b is made of a film containing light red, for example. It becomes a packaging bag for sandwiches with a special design. The front film 2 is a single transparent film.
[0011]
Next, a procedure for packaging a triangular sandwich with the sandwich packaging bag 1 shown in FIG. 1 will be described with reference to FIG.
First, as shown in FIG. 3 (a), the opening 7 of the sandwich packaging bag 1 is opened, and the sandwich 20 is inserted so that the front surface 20a is inscribed in the front film 2, as shown in FIG. Next, when the front film 2 and the back film 3 are folded along two sandwiches 13a and 13b along the sandwich 20 and expanded three-dimensionally into a quadrangular pyramid shape, the sandwich 20 is deeply accommodated. As shown in FIG. 3B, the lower four side surfaces 21a, 21b, 21c, and 21d of the sandwich packaging bag 1 extending outwardly in the shape of a pyramidal cylinder first correspond to the back surface 20b of the sandwich 20. The lower one side surface 21b of the packaging bag 1 is folded so as to overlap the bottom surface 20c of the sandwich 20, and then the lower portion of the packaging bag 1 corresponding to the triangular surfaces on both sides of the sandwich 20 is shown in FIG. The two opposite side surfaces 21b and 21c are sequentially folded so as to overlap the bottom surface 20c of the sandwich 20, and then the lower one side surface 21a of the packaging bag 1 corresponding to the front surface 20a of the sandwich 20 is sandwiched as shown in FIG. 20 is folded so as to overlap the bottom surface 20c of the sandwich 20, and finally, the lower one side surface 21b of the packaging bag 1 corresponding to the rear surface 20b of the sandwich 20 and the lower portion of the packaging bag 1 corresponding to the front surface 20a of the sandwich 20 overlapping therewith. Sealing is performed by adhering the sealing adhesive tape 30 to the side surface 21a to complete the sandwich packaging.
Alternatively, the opening 7 of the sandwich packaging bag 1 may be opened, and the sandwich 20 may be inserted so that the front surface 20 a is inscribed in the back film 3. At this time, the difference is that the front film 2 and the back film 3 are simply replaced. That is, the opening film 40 is provided not on the front film 2 but on the back film 3, and the direction of the sandwich 20 is reversed, so that the binding procedure is also reversed. However, it is preferable to use the film formed by adding the upper film, the middle film, and the lower film as the back film 3.
[0012]
Next, the procedure for unpacking is described.
As shown in FIG. 3 (d), the opening tab 11 provided with the required notch 10 corresponds to the upper end position of the lower film extended in the longitudinal direction of the adhesive tape 30. As shown in FIG. 4A, when the opening tab 11 is picked and the lower film 3c is torn, as shown in FIG. 4B, the closing by the adhesive tape 30 is released. Therefore, the lower four side surfaces 21a, 21b, 21c, and 21d of the packaging bag 1 are opened widely, and the sandwich 20 can be taken out from the sandwich packaging bag 1 as shown in FIG. Since the lower film 3c cannot be recovered, the virginity of the packaging is no longer lost by the opening.
[0013]
The present invention is not limited to the above configuration. The following embodiments are also included.
(1) The knob 9 is not an essential requirement for the present invention.
(2) The edges for forming the bag may be adhesive rather than welded.
(3) In the above embodiment example, one side extension part and the other side extension part of the packaging bag and the front and back edges of each of the extension parts are formed in a straight line, As long as it can be folded and sealed on the bottom of the sandwich, it does not necessarily have to be parallel straight lines.
(4) The folding method of the portion that folds to the bottom of the sandwich when packing the sandwich is not particularly limited as long as it can be opened by being opened by the opening knob.
(5) Further, in the above-described embodiment, the items to be stored in the packaging bag have been described as sandwiches having a substantially right triangle, but the present invention is not limited to this.
[0014]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an extremely excellent sandwich packaging bag that solves all the problems associated with the opening of conventional sandwich packaging. In detail, there are the following advantages and effects.
(1) Anyone can open easily and instantly with one touch.
(2) Since the lower film is removed by opening and remains as evidence that it has been opened once, the virginity of whether it is unopened is guaranteed. In other words, once opened, it can be opened with guaranteed virginity of the package that does not completely return to the original packaging form, ensuring the safety of the packaging, and anyone can easily maintain the form of the bag instantly with one touch. Can be opened.
(3) Even after opening, the sandwich packaging bag remains intact and remains intact, so when you ate one of the stored sandwiches, you put in the bag what you haven't eaten yet. Can be kept clean in condition. You won't have to worry about where to put sandwiches that you could n’t eat at once in a car. You can continue to house uneaten sandwiches and keep them clean.
(4) When pulling the opening tab and cutting the surface film, the distance from the opening tab to the sealing tape is very small, so there is no fear that the surface film will be cut off. Since the adhesive tape for sealing functions as a guide tape for the tearing line, the front film is not cut off halfway through the opening from the adhesive tape for sealing. Therefore, it is not necessary to use a costly uniaxially stretched film or cut tape having a strong cleavage direction, and the sandwich packaging bag of the present invention can be manufactured using a low-cost general-purpose film.
[Brief description of the drawings]
FIG. 1 is a front view of a sandwich packaging bag according to a fourth embodiment of the present invention.
2 is a perspective view showing a process for continuously manufacturing the sandwich packaging bag of FIG. 1; FIG.
3 is a perspective view showing a process of packaging a sandwich with the sandwich packaging bag of FIG. 1. FIG.
4 is a perspective view showing a process of unpacking the sandwich packaging bag of FIG. 1 and taking out the sandwich. FIG.
FIG. 5 is a front view of a sandwich packaging bag according to a conventional example.
6 is a perspective view showing a process of packaging a sandwich with the sandwich packaging bag of FIG. 5. FIG.
FIG. 7 is a perspective view showing a state in which the packaging of the sandwich packaging bag according to the conventional example is unpacked.
[Explanation of symbols]
1 Packaging bag for sandwich 2 Front film 3 Back film 3a Upper film 3b Middle film 3c Lower film 4 Side edge (seal part)
5 Upper edge vicinity (seal part)
7 Opening 8 Upper edge (seal)
9 Cutting section 10 Cut 11 Opening piece 20 Sandwich 20a Sandwich front face 20b Sandwich back face 20c Sandwich bottom face 21a Lower side face 21b of sandwich packaging bag corresponding to the front face of sandwich Sandwich packaging bag corresponding to the back face of sandwich Lower side surface 21c, 21d Lower side surface 30 of sandwich packaging bag corresponding to sandwich triangular surface Sealing adhesive tape R1 First raw fabric roll R2 for constituting upper film Second raw material for constituting lower film Anti-roll R3 Third raw roll R4 for constituting the middle film Fourth roll for constituting the front film R4

Claims (1)

The top and bottom films of the trapezoidal trapezoid overlap and the upper edges and both edges of both films are connected to each other, the triangular sandwich is received from the lower end opening, and the lower part of the film is folded to the bottom of the sandwich from all sides. In a sandwich packaging bag that adheres and seals and seals an adhesive tape across the lower part of the film that folds into the lower part and the lower part of the film that folds oppositely,
At least one of the front film and the back film is connected to the lower end of the upper film by overlapping the upper end of the middle film on the inside, and further connected to the lower end of the middle film by overlapping the upper end of the lower film on the outside, and , Comprising an opening tab formed by providing a required notch at the upper end of the lower film, and configured to be able to tear the lower film toward the lower end of the bag by picking the opening tab. A packaging bag for sandwiches.

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